45 



The result of this experiment, as shown in the table, was 

 an increase in the yield in favour of the heavy ration of about 

 2J pints per cow per day. This would appear to be a decisive 

 result, as the two lots yielded at the commencement of the 

 experiment almost exactly the same amount of milk per day, 

 and the treatment of the two lots was identical throughout, 

 except as regards the amount of concentrated food supplied 

 in the rations. The increase, however, is hardly sufficient 

 to pay for the extra concentrated food which went to pro- 

 duce it, and, as has been shown, it took place chiefly during 

 the first two weeks of the experiment. 



The quality of the milk. It has been shown that the 

 average percentage of butter-fat in the preliminary trials was 

 very similar for the two lots of cows, viz., 3"32 for lot I., and 

 3*23 for lot II. Table XII. shows the average butter-fat in 

 the milk of the two lots during Experiment C. 



TABLE XII. AVERAGE PERCENTAGE OF BUTTER-FAT IN MILK 

 FOR 12 WEEKS. 



Out of a possible of 84. 



